Rotary cutter.



WTN ESSES: v

H. W. STARK n W. KN-UTS.

ROTARY-CUTTER MPLIUATIUN FILED Noia 1, 1913.

'Patented Dec. 22, 1914,

2 SEQBTS-SHEBT l.

LN v NToR .9

-Hg W. STARK L W.'KNUTS.. ROTARY CUTTER.

APPLICATION FILED NQV. 1, 1913. I 1,121,7'26.v Patented Dec. 2211914.

2 SHEETS-SHEET 2* INVENTORS.

WITNESSES;

Eug@ WSar/f,

HUGQW. STARK .AND 'WILLIAM KNUTS, 0F SAN FRANCISCO, CALIFORNIA.

ROTARY cu'rrnn.

Specication of Letters VPatent. Patented Dc.-2-2,1914.l

nppucauon mea-November" 1, `i9 1a. seriaiivo. vestes.

Tov alleatom vit may concern:

' Be itknown that we, Huso W.' STAEK, a citizen of tlie U-nited States, and NVILLIAM lxxUTs, a sub]ect of the Czarjof Russia, re-

' siding in the city and; county of San Fran- E ciscoand State of California, have invented v new and useful lint)roveniients in Rotary@ Cutters, 'of which the following isla specili-` cation.

This invention a cutterfforcnt-i ting blanks or shapes from sheet material particularly paper, rubber,ileather,'etc., and

kets vor vWashers used in -1thecanning',in-

plication is not restricted.-

dustrv, valthough manifestly its use or .ap-f

. The chief object of "this invention is 'toprovide a simple, practical novelV mechanismfor expeditiously and accurately cuttingiings orgaskets from thin stock.l

Other objects and advantages Willappeai The invention consists generally in the .g combination shown of a die or anvil member or members'for defining the form of the@ piece to be produced and-.revolving -ballsV forced with sufficient pressure piece of stock interposed b etiveen. the anvil and the ballsso asxto cut from adapted to be against a the stock the piece desired by tlie application of pressureg'and vconsists furtherof;

means .for automatically centering and governing the' position of the b alls,ywith'rela tion tothe anvil; and alsoof means for mov ing one or the other of the cutting members. The invention also comprises details 'of construction which vvillbe more fully eX- :plained by `reference, to the accompanying drawings, in which- Figure 1 is a side elevation ofthe machine .embodying the invention, partly, broken away. Fig.- 2 is an enlarged'central trans verse section through the rotary cutter carrier and the fixed or fixed die member.' Fige is a plan view of the defining die.

- 2 is a suitable frame or base here as adapted to be clamped to a bench or table.

lengthwise movement.

ings 3a; the shift collar anvil; Fig. 3` is a plan. view showing the operative face of the anvil Fig. 5 is aplan view,

showing' a gasket as produced by the illustinted form of cutting. mechanism. shown.

AThe Ashaft, 3 may be vdrivenL/.by 'suitable means,"as for instance, abroad-faced'pinion 6 fast thereon engaged bya driving pinion .l

'Z 'on acou'nter or crank-shaft 8 journaled `in 'the frame, the f ace of pinion @being broad .enough to permit thev reciprocation ofshaft and the parts carried by vit within desired limite .end Yet miminakeiwo pin-ions. 6 7.

m drlvmgengagement.

of the .head 10 and are surroiind'ed'by'l the spr1ngsj'13 and screw into the'tra'ck plate f meansyas a'bushing 9, is a headlO having 'especially to means for cuttingr sealing gas- .screws 14 ivhich screw 4through the bottoni 12. The balls 13, of'wliicli tliere-iiiay be one I or more, are preferablyg arranged in pairs Adian'ietrically opposed.. and While they run .on track a .turn-table `disk 1.5,'Whic1i'latter is supported. bygantifriction balls' or rollers '16 4on the gated radial 12 .they are siipportedlaterally in.

head V110".v .Thev turn-table disk 15f'has`elon i slots 17 through Whic'athe balls "the'turn-table disk'. bythe perforated top l plate 18,- Awhich also has elongated-[radial 'slots corresponding -to theslots 17 .turn- V 4talzile'disk 15,"bu`t the -slotsfin the top plate j' '18 Aareof less Widtlijthan the diameter of tofkeep the latter frornifalling-"off, at the '9G the balls and embrace the balls above'the plane of ahorizontal diameter,"s o that the .The upper end-- Sametime the' t'i between the-turn-table and i shaftis' such'that the turn-table has a free, running movement. on its ball-bearing 16 -independent of the speed of rotation ofthe shaft 3 Vor head-10.-

In order to insure eachv pair of balls 13 'traveling in the .same circular path indeorj guide die with which the balls 13 coiper# ate, as shortly -to be explained, each pair of ametrically opposed balls' 13 ,gether by means of-a sliding fslides Vin a diametral Wav .plate 15; the yoke bar 20 a snug but free running fit and the yoke bar pendent of any eccentricity of the head 10 are yoked tobarZO, which to the turn-table having perfora` tions through and in which the balls 13 have balls 13 to the fixed 'cutting' edges 31 'and to i v2O having an elongated-centralslot 22 through which the shaft 3 passes.

complementary cutting members in this ma- -fchine /The :oniplenientaryy cutting mein.l

bersfrepresen'ted by the ring 'die o1 anvil 25l is stationaryandis carried by a bracket 26,'

suitably supported frornthe frame 2. This. anvil has a peripheral groove 2.7,? coaxial with and of the same radius as the .peri-ph-v bya'lever 30. The bottom square edges 31- formed bytheinner and outer'walls'pf the] ,groove or channelv 27 cone'rzute'',-With-,jithe'` balls 13 when the head 9 is recipro'eatedup- Wardly to cut out a ring ,or Washer b,.Fig. 5,}

o'f-"the enact dirnensicnsl of the channel 27.

is'an ejector vf@clung` through .the hol-vv 'low shaft 3 for the purpose ofpuslii'n'g the Waste central disk of the blank stock, repre- Isentedby'the arcac, Figg, left after the- Washer 5 has been cut; theplunger-35 being operated.by suitable means, as head 36,120 .push thewaste'porti'on c up intoy ahellow throatfor discharge 'hopper-37.

'Ihe'head-.Q and die member or'a1ivil25l are"remcvable -andfparts 'are interchangeable-"so as to adapt the one-machineto cut blanks of diierent size.

' The operation of `the 'machine is as follows: Assuming that thediesv and partsar'e blank-.of desired size, and that the rotary head-is in normal depressed position and shaft 3 revolved at vsuitable' speed, a sheet 4f blank' stock,-indicated l'at' a, Fig. 2,;is in. sertedl between the rotary cutter members, indicated bytlie'b'alls 13; andthe stationary the stock against. the-sharp edges 31v of the' stationary anvil 25. The turn-table 15 which carries the cutting balls 13 is free to rotate on its bearings 16 and teso adaptthe cutting thestock operated on,`that the stock will not be injured or crumpled, no matter how .delicate or thin the stock is; theturn-table 15l having a' movement independent of'the carrier head 10 which permits the latter to be driven at high speed; the turn-table and balls lagging behind, yet responding as pres-i sure 'is increased. The balls are prevented from' injury by means vof the yielding track l 12.V The balls adjust Vthemselves to any` ec-' centricity or defect in setting up the head 10 the main thing 'being te have the balls 13v 'always fellow around the channel l2-7 'and' engage both cutting edges 31 'of the salneatall times. Thisaut'omatic. centering cf the balls is very important. When a washer has? 'We claim .and

edge to severny material-placed between -the m. 1 anvil 25 -and 'thelever' 5 operated to'press i nieuwe 4tary head to drop, plunger" -ltedto push the center 'disk c.,-u"p inte thedischarge throat-3?, and lever- 39i1s, depressed to eject the vvvaslfier. :tromv the 'channel-2?, vThis Washer falling en to the rapidly revolving- 7419'v -turn-tableis ejected by centrifugalv force.

lt is manifest that this apparatus -is capa? ble of `varia-tienin 'ts several mechanical details, to adapt it o-c'ut articles of'various vshapes and. sizes,l corresponding in shape 75 and width to the channel?? of the anvil 25, and regulating the. orbitofthe balls acccrdanvil 25 ,and the balls 13 be of-dif'ferent hardness. In practice We make 'the' edges 31 .o f .hardsteel andthe balls' 13 ofbrass, it is easier jte replace-the balls annular die. Having thus-.described our 'inventiom'what desire te y.seein-'e by Patent, ise- 1.-I In a cutting device, the combination'cf anlanvil hajvingy a vcontinuelnisc haiuiel,l the'j 99 "Walis .et said ehannele'enstituting cutting Aedges, and ai ballrunnng in said channel and coperating'with said cutting edges. v2. A cutting deviceeompri'sing a fixed ang vil 'with an annular groove having a cutting 95 edge, and a pair of diametrically arranged loose balls adapted to runover said cutting edge. 'a

,3. A cutting vdevice comprising a fixed anvil 'having-a continuous vcutting edge, a ro- 100 taryj carrierwvith meansor mevmg it toward and frein saidanvil, and a loose ball on said carrier coacting with said cutting,

" In' aj cutting dei-'ice,. the combination a, rotary carrier, a pair of diametric'ally arranged loose balls on said carrier, 'a lixed v*anvil having anannular groove, substantially coaxial with the .axis of rotation of the carrier and-'of a radius substantiallyequal to the radius of the "arc of travel of said balls, and means.or ..moving the balls to' Ward andfromsaid groove.

. 5.-.In -a cutting device, the coinbiz"nation"et" a rotary carrier, a pair of diametrically'arranged loose' balls on said. carrier, a fixed anvil'havin'g ari-'annular groove, substantially coaxial with the axis of rotation of the car-` rier and of a radius' substantially equal te 120 the radius of the arc of travelof said balls,

'means for moving the balls toward and from said groove, and meansor yoking a pair ofballs togetherto adjust them to the groove.

6. In a cutting device, the combination @i- `a rotar-y carrier'. a pair of diamctrcallyai'' ranged loose'balls on said lean-ier, a fixe-df'vanvil having an annular groove substan- Y been cut out as indicated at b, Fig. .,theI-tial'ly.coaxial with the axis of rotation. of

` 6 5 lever-5 isfreleased allowing the balls and rojthe carrier and of a radiussubstantially-'n -equal to the radiusof thearc of travel of said balls, means ,for moving the balls toward and from said groove, and yieldable tracks for the balls,

In a cutting device, the combination ror' a rotary carrier, pair ci diametrically arranged loose balls on said carrier, a lined anvil having an annular groove substantially coaxial with the axis of lrotation of the carrier ,and of radius substantially dual tothe radius of the arc of travel of said means for moving the balls towardand from said groove, and a plun-v ger o eratingV` in said groove.

t). V -gasket cutter consisting'of a pair ot annular concentric cutting edges and rotary balls with means for bringing the balls and said cutting edgesy into opposing IContact upon'thestock interposed between the same.

9. In a cutting device, the combination of' an lanvil ymember having a continuous .groove with cut-ting edges, an'opposed complementarv rotary head, cutting balls on the head, means for carrying the headtoward and from the anvil tobring the balls into cutting contact `with the cutting edges, a turn-table member on the-head and carrying the balls, and said balls and turn-table. turnable independently of the head.v

110. ln a cutting device, the combination of an anvil member having a continuous groove plementary rotary head, cutting balls on the head, means `for carrying the head toward and from 'the anvil ,to bring the balls intocutting contact with the .cutting edges, a

y .turn-table member on' the head and carryin the balls, said balls and turnltable turnable independently' of the head, and a yield'- ably mounted track on the head for said balls. Y v

11. In a cutting device, the combination of an anvil .member having a continuous groove Withcutting edges, an opposed comleinentary rotary head,l cutting balls on the head, means for carrying the head tov'vard Y and fromthe anvil to bring the balls into vcutting contact with the cutting edges, a

turn-table member on the head Yand carryting the balls, said balls and' turn-table turnln a cutting device, the combination an opposed comwith cutting edges, an opposed 00H1-,

- running y i ting pressure against said cutting edges, said ball and cutting edges being oli-dit.

means portion through :tor centering the balls in said groove so that they. may run when cutting, in cutting contact with both edges of the groove.

ln a cutting device, the combination oi an anvil member having a continuous groove with cutting edges, an opposed complementary rotary head, cutting balls on the head, mea-ns for carrying the head toward and from the anvil to bring the balls into cuttingv contact with the cutting edges, a turn-tablemember on the head and carrying the-balls, said balls and turn-table turnable independently ot'. the head, and meansfor centering the balls in said groove so that they may run when cutting, in cutting contact with both edges of the groove,

v saidvlast-named means consisting of a sliding yoke plate, substantially as described. le. In a lcutting device, the combination of' an vanvil ,member having a continuous Ygroove with cuttingv edges, an opposed complementary rotary head, cutting balls on the head, means for carrying the head toward and from the anvil to bring' the balls into cutting contact with the cutting edges,I a turn-table member on the head and carrying the balls, said balls and turn-table turnable independently of the head, and a plunger for ejecting the central diskremaining from the cutting operation.-

ln a cutting device, an anvil member having a continuous groove with cutting edges, an opposed complementary rotary head, cutting balls on the head, means tor carrying the head toward and from the anvil to bringthe balls into cut ting contactA balls, saidballsI and turn-table turnable independently of the head, said anvil member being hollow and forming a discharge hopper for the Vcentral cut portionv of the stock operated on remaining after the cutting operation, and a plunger working through the head to eject said central stock said hopper.

16. A cutting device comprising an anvil member having a groove, the edges of the groove formingv cutting edges and a free ball adapted to be pressed into cutferent degrees ol hardness, i

In testimony'whereof We have hereunto set our hands in the presence of two subscribing Witnesses einen W. eraan. Winni nanars.

with the cuttingfedge's, a tur'ntable memberronthe head and carrying thev the,y combination of iio 

